Devs Forge

Free online developer tools

Free Developer Tools Online for Everyday Work

Free developer tools online for formatting JSON and HTML, decoding JWTs, testing regex, converting timestamps, generating UUIDs, and more. All browser-based coding utilities run locally in your browser.

  • JSON formatter and HTML formatter
  • JWT decoder and regex tester
  • Base64 encoder and UUID generator
  • Color palette, timestamp, and Markdown tools
Browse all toolsJSON Formatter
JSON Formatter & ValidatorFormat raw JSON, validate syntax, and pretty-print structured data instantly in your browser.JWT Decoder / InspectorDecode JWT headers and payloads, inspect claims, and review token timestamps locally.Regex Tester with ExplanationTest regular expressions, review matches, and get a lightweight explanation of common regex tokens.Base64 Encoder / DecoderEncode plain text to Base64 or decode Base64 payloads instantly with UTF-8 support.

Browse by category

Developer tools categories

Explore free browser-based developer tools grouped by formatting, conversion, generators, and utilities—each category links to every tool in that workflow.

Formatting Tools

6 tools

Clean up code, content, and markup for faster debugging and readable output.

JSON formatter onlineMarkdown previewer onlineHTML formatter onlineXML formatter onlineYAML formatter onlineCSS formatter online

Conversion Tools

4 tools

Convert between common developer formats instantly without leaving the browser.

Base64 encoder onlineURL encoder decoder onlineCase converter onlineTimestamp converter online

Generators

4 tools

Generate IDs, palettes, gradients, and interfaces for day-to-day development work.

UUID generator onlineColor palette generatorGradient generator CSSJSON to TypeScript interface generator

Developer Utilities

5 tools

Inspect tokens, validate patterns, and work through developer workflows faster.

JWT decoder onlineRegex tester onlineHash generator onlineCron expression parserQuery string parser

Why Devs Forge

A single hub for the coding utilities you reach for every day.

Devs Forge exists to help you format, decode, convert, and generate data without switching tabs, creating accounts, or uploading sensitive payloads to a server. Each tool is built for a specific developer task you already do regularly.

From JSON and JWT workflows to regex checks, timestamps, colors, and markup—open the tool you need, get a clear result, copy it, and move on.

Workflow ready

Copy-first UX

Every tool includes instant output and copy-to-clipboard support for low-friction workflows.

Command palette

Open tool search anywhere with CTRL + K for fast navigation.

Privacy first

Inputs stay on your device. No account, no uploads, and no backend required to use the tools.